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Schweizerische Gemmologische Gesellschaft
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Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Stress fissure («sun spangle») in baltic amber
Midge included in amber from the Baltic coast, polarised light
Partially etched diamond crystal
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Colour zoning in ruby from Mong-Shu, Burma
Agate from Reichweiler, Germany

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© SGG/SSG 2019

 

Our sponsors for 2019:

 
 
 
 
System Eickhorst
 
 
FAERBER
 
 
FERRARI
 
 
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